Knob Configured for Rapid Adjustment with No Loss of Target Engagement

Barrel Specs:

Manufacturer: BALLISTIC ADVANTAGE

Material: 4150 CrMov

Barrel Length: 16"

Twist: 1:7

Nitrided: Inside and Out

Contour: M4

Chamber: 5.56x45mm NATO

Feed Ramps: M4

Thread: 1/2x28”

5.56 caps upper mi quad rail carbine

Got my 5.56 carbine upper three days earlier than expected .It fit nice and tight to my lower. I went out to the range and it shot great no problems and was very accurate was hitting Head size targets at 100 yards with iron sights. Special thanks to Charles and Teresa for spending alot of time even when they where closed to answer my questions and calling me back whithin minutes of any missed calls. I have many ar15's and this is the most robust durable and reliable one for sure